Apparatus for heating ovens or other compartments.



No. 773,862. PATENTED NOV. 1. 1904, P. POX. APPARATUS FOR HEATING OVENS OR OTHER GOMPARTMBNTS.

ew- 111 I APPLICATION FILED NOV. 3, 1902.

N0 MODEL.

Jdfarznw llivrran STATES Patented November 1, 1904.

PATENT OFFICE.

PETER FOX, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent N0. 773,862, dated November 1, 1904.

Application filed November 3, 1902. Serial No. 129,895. (No model.)

To all whom it may concern.-

Be it known that I, PETER FOX, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Apparatus for Heating Ovens or other Compartments; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a novel apparatus for heating ovens or other compartments, the object being to provide means for uniformly heating compartments by means of radiated heat and to provide means for regulating and controlling the temperature of such compartment; and it consists in the features of construction and combinations of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure l is a fragmentary per spective view of a bakers oven provided with heating apparatus constructed in accordance with my invention. Fig. 2 is a detail sectional view of a blower and accessory parts interposed in the heating apparatus shown in Fig. 1.

My invention consists, essentially, in providing means for heating compartments by means of hot air and consists, more essentially, in the means for uniformly distributing the heat and controlling same.

In the accompanying drawings, A indicates a bakers oven, in one corner of or adjacent which is a heater B, the fireplace of which is connected with a chimney C by means of the flue D. Said heater B consists, preferably, of a small boiler in which air is heated'instead of water, such heater being connected with one end of each of the horizontal zigzag coils of pipe E and F, the former of which preferably supports a tile floor G and the latter of which lies immediately under the ceiling or roof of the oven or other compartment. The said coils are supported by the walls of the compartment in any convenient manner. At their other ends said coils E and F are connected, by means of a return-pipe H, with the lower end of said heater B. To insure perfect circulation of the heated air through said coilsE and F, and thereby a more thoroughly uniform and higher temperature in the compartment, mechanical means for forcing circulation through the coils is introduced in said return-pipe H. In the instance illustrated such mechanical means consists of a blower O, interposed in said return-pipe H, the delivery end of same being connected to the lower end of the heater B by the pipe P and the suction end being connected with the outlet ends of said coils E and F. The delivery end of said blower is provided with a double-funnel-shaped mouthpiece provided in one wall with a series of openings Q, controlled by a damper R, through which fresh air is introduced into the system. Adjacent its delivery end said blower is provided with an opening S, controlled by a valve T, through which hot air may be exhausted from the system.

By closing both dampers R and T the air contained in the coils is kept in constant circulation and is heated over and over, thus losing little heat and producing an intense heat in the coils. By partially opening both dampers some of the hot air is exhausted and replaced by fresh air in an obvious manner, and by opening both dampers full all of the hot air is exhausted and replaced by fresh air, as will be obvious. Thus the temperature of the compartment can be readily controlled to maintain it uniformly at any desired degree.

To further enable the temperature to be controlled, I provide valves V in the coils E and F, so that either one can be entirely shut off.

The temperature may be further controlled by varying the speed of the blower; but I have omitted illustration of speed-varying means for the reason that the latter are well known.

I claim as my invention 1. An apparatus for heating ovens or other closed compartments comprising a heater, a fine connecting said heater with a suitable chimney, a horizontal coil of pipe forming a support for the floor of said oven and a second horizontal coil of pipe immediately below the ceiling of said oven, pipes connecting one end of each of said coils to the top of said heater, valves in said connecting-pipes, a return -pipe connecting the opposite ends of both of said coils to the lower end of said heater, devices interposed in said return-pipe to aid the circulation of air in said coils, and means for admitting fresh air to said circulating system.

2. An apparatus for heating ovens or other closed compartments comprising a heater, a flue connecting said heater with a suitable chimney, a horizontal coil of pipe forming a support for the floor of said oven and a second horizontal eoilof pipe immediately below the ceiling of said oven, pipes connecting one end of each of said coils to the top of said heater, valves in said connecting-pipes, a return-pipe connecting the opposite ends of both of said coils to the lower end of said heater, devices interposed in said return-pipe to aid the circulation of air in said coils comprising a fan adapted to exhaust the heated air from said coils and to force same back through said heater, a Valve-controlled opening in the casing of said fan adapted to per mit the escape of the heated air from the sys tem, and valve-controlled openings in said return-pipe between said fan and said heater to permit fresh air to be drawn into said pipe by the action of said fan.

In testimony whereof I afiiX my signature in presence of two witnesses.

PETER FOX Witnesses:

RUDOLPH WM. LoTZ, ARTHUR C. LOTZ. 

